Automatic cut-off for gas-burners.



W.-H. K RUEGER AUTOMATIC GUT-OFF TOR GAQ BURNER8.

APPLICATION FILED JUNE 1-0, 1908.

INVENTOR Patented Mar. 15, 1909.

WILLIAM KRUEGER, OF WILKES-BARRE, PENNSYLVANIA.

AUTOMATIC CUT-OFF FOR GAS-BURNERS.

Specification of Letters Patent.

Patented March 1 6.,,1O9s

Application filed June 10, 1908. Serial No. 437,62.

To all iohom it mag/concern:

Be it known that I, IVILLI'AM -Wilkes-Barre, countyof Luzerne, and State,of Pennsylvania,have invented a certain new and useful Improvement inAutomatic 5 Cut-Offs for Gas-Burners, of which the following is aspecification. j

My. inventionrelates to a .new and useful improvement in automatic cutoils for gas burners, and has for its object vto provide I anexceedingly simple andeflective device of this characterby means ofwhich the gas may be automatically turned ofl-should the light by anymeansbeextinguished.

1th these ends 111 view, this invention consists in the detailsofconstruct on. and

combination of elements hereinafter set forth and then specificallydesignated by theclaims'.

In order that those skilled in. the art-to which this inventionappertains may understand how to make and use the same, I will describeits construction in detail, referring by letter to the accompanyingdrawing forming a part of this specification, in Whichi p Figure 1 is alongitudinal sectional view of my improved-automaticcut ofi. Fig. 2'

is a side elevation of a slightly modified form of my improvement,and,Fig. 3 is a side elevation of a still further modified form of myimprovement.

In carrying out my invention as here-f embodied, A represents a gasburner so; roduce a central longitudinal l lirough. which the, gaspasses formed as to opening Bt from the supply me to the tip tobelighted.

C indicates a iorizontal opening passing through. that portion. of theburner in whi'ch is formed the opening B, andin this horizontal o eningis laced the valve rod D, having t 1e groove t formed thereon, whichwhen in alincment with the opening B will allow the gasto pass throughsaid opening B;

Findicates an opening in one end of the valve rod D, for the purposehereinafter de scribed.

' of wire I, which is adaptedto slide up and down within theo eningFwhen the valve rod D is moved bac ward orforward.

I ll. Kiii nonn, a' citizen of the United States, residing atthermo'spring G in proximity to t e burner, ,this thermo' spring G willquickly expand, which will move the valve rod D until a portion of thegroove E comes inalinement with opening B, when the gas will flowthrough said opening and ignite it andas j thethermo spring G expands,the o ening B will be opened wider allowing t egas to How more freely,thus producing a larger and brighter flame. When ,the' gas is flame isotherwise extin uishedwhile the gas is turned on, the cooling of thethermospring causes said thermo spring G to contract, thereby closingthe opening B and )r'eventing the escape of gas. In practice I find thatthe closin ol" the valve is almost instantaneous and t at thedifferencebetween the high temperature of. the flame and the normaltemperature of the, room is sogreat, that on extinguishing the flame thethermo spring contracts instantly;

In the device shownin Fig.2, I have opened all t e way, depending uponhow far the ring J is placed upon the valve rod D, be-

will move the valve rod D, thus bringing the ring J toward the burneruntil it comes in been placed close to the end of the valve rod it willallow the burner to be 0 ened full, but

stem so that when it comes in contact with the burner it will onlypartially open the opening B, then only'a small flame would be given,such as is often left burning through the night, and should this flamein any way become extinguished, the gas would be shut ofi.

The device as when thegas burner is out of the reach of a man. In thisone I provide an arm K secured to the burner, and to the outward end ofthis arm is pivoted the lever L, having the extension M formed on oneend thereof, to the opposite end is secured a chain, a rod, or any othersuitable appliance. When it is (lesiredto light a burner the chain N ispulled downward, which will pull that end of the i lever to which it issecured downward, thus turned oil to 'ext'inguish the flame, or a;

shown in Fig. 3. is to be used The operation of this burner is asfollowsi By holding a taper or match a ainst the placed on the end ofthe valve rod, opposite "spring, a tightfitting ring J which will allowI cause as the thermo spring Gexpands, it.

'90 contact therewith, and should the ring have,

should it be placed far enougi on the valve lUU . holding the burneropen, allowing the lever L to return to its original position again because that end on which is formed the extension is longer and heavierthan the opposite end, and should' the flame be extinguished the thermospring will-instantly close the valve,thus cutting ofi' the flow of gas.

Of course I do not wish to be limited to the exact details here shownas-these may be verified within certain limits without departing fromthe s irit of lny'invention.

Having thus ful y described my invention what I claim is new and usefulis 1. In combination with a gas burner hav- 7 mg 3])5111 of intersectingpassages, a valve rod sliding in one of said passages, and having eachof its ends projecting beyond opposite sides of the burner, an abutmentto enga e said burner on one end of said rod, said opening therethroughand being formed at an intermediate point along its an annular groove, aspring of inverted J- ength with 1 outer face of said end of the shorterleg of the sprin 2. in combination with a gas burner having a pair ofintersecting passages, a valve rod sliding in one of said passages, andhav- 1 g each of its ends projeqtin I beyond opposite sides of theburner, an a utrnent to enga c said burner on one end of said rod, saidrod on its opposite end having a transverse openingtherethrough'andbeing formed at an intermediate point along its lengthwith an annular groove, a spring of inverted dshape located entirely onone side of said burner and having the end of its longer leg extendingfreely through said transverse opening of'the valve rod, the end of theshorter leg of said spring abutting said burner, and a band friotionallyengaged about the exterior of said burner, and on the I l l i shapelocated entirely on one side of said i burner and having the end of itslonger leg extending freely through said transverse o ening of thevalverod, the end of the s orter leg of said spring abutting said burner, anda band frictionally engaged about the exterior of said burner and on theouter face of said end of the shorter'leg of the spring, an outwardly)rojecting arm adjacent the lower end 01 shaped lever pivoted to saidarm at a point remote from the center of its longer leg, said mg theouter face of the shorter leg of the lever, said lever normallyoccupying an inclined position with respect to said burner. In testimonywhereof, -I have hereunto afiixed my, signature in. the presence of twosubscribing witnesses.

Witnesses OLm F. HARVEY, Jr., LEwIs M. LARNEnsaid burner, an L-- WILIJAMKRUEGER.

spring at the free end of its longer leg engagro on its opposite endhaving a transverse

